Roller type continuous dyeing apparatus



July 30, 1963 SHIGERU YAMAWAKI 3,099,146

ROLLER TYPE CONTINUOUS DYEING APPARATUS Filed June 15, 1961 3 Sheets-Sheet 1 July 30, 1963 SHIGERU YAMAWAKI 3,099,146

ROLLER TYPE CONTINUOUS DYEING APPARATUS Filed June 15, 1961 3 Sheets-Sheet 2 July 30, 1963 SHIGERU YAMAWAKI 3,099,146

ROLLER TYPE CONTINUOUS DYEING APPARATUS Filed June 15, 1961 5 Sheets-Sheet 3 7,1411 Ill- 'IIIIIl III I) I'II-"II for continuously performing United States Patent 3,099,146 RULLER TYPE CUNTINUQUS DYEING APPARATUS Shigeru Yarnawaki, Handa-shi, Japan, assignor to Daishin Seiki Kabushiki Kaisha, Handa-shi, Japan, a corporation of Japan Filed June 15, 1961, Ser. No. 117,419 3 Claims. (Cl. 68-263) The present invention relates to textile dyeing apparatus and particularly to roller type continuous dyeing apparatus for single or multiple color dyeing, for example, of top slivers.

In the past, no printing apparatus has been available the successive steps 'of such printing process. In addition, there have been various difiiculties such as extremely poor dye adsorption of the textile fibers and hence unsatisfactory resistance of the dyed material to washing and light.

In view of the above, the present invention has for its primary object to provide a continuous textile dyeing apparatus of the kind described adapted to provide a highly improved rate of dye adsorption without aid of any dyeing assistants.

Another object of the present invention is to provide a continuous textile dyeing apparatus of the kind described having a simplified printing mechanism.

It is still a further object of the invention to provide an improved roller for use in textile dyeing apparatus of the above kind.

Accordingly the present invention provides a roller type continuous textile dyeing apparatus comprising in series a dye printing section including a rotary cylinder and a. desired number of p'nnting rollers arranged circumferentially thereof for imprinting dye on a textile material passing between said cylinder and printing rollers, a steaming section through which said material is conveyed from said dye printing section to be impregnated with said dye imprinted onto said material, and a chrome printing section including a second rotary cylinder and a desired number of printing rollers arranged circumferentially of said second cylinder for forcing out chrome liquid from the interior of said printing rollers while applying suction from within said second cylinder thereby to impregnate the chrome liquid into the previously imprinted areas of the textile material passing through said chrome printing section.

With such apparatus, it will be recognized that the textile printing process is performed continuously in a series of steps on one single apparatus and thus highly efficiently.

in conventional printing processes such as the Vigoureux process, the printing paste is prepared as a mixture of dye and chrome and during steaming of the dyed material the dye may be combined with the chrome exteriorly of the fibers or the chrome may first be combined therewith to preclude adsorption of the dye or to render such adsorption unstable.

In contrast the apparatus according to the present invention is adapted to perform so-called after-chrome dyeing wherein the chrome is added after dye printing and subsequent steaming treatment thereby obviating the difliculties involved in the conventional Vigoureux process. This provides a highly improved rate of dye adsorption without requiring any dyeing assistants.

In order that the invention may be clearly understood and readily carried into effect an embodiment thereof will now be described in detail with reference to the accompanying drawings in which:

FIG. 1 is a front elevational view of the embodiment of the dyeing apparatus of the present invention;

FIG. 2 is a fragmentary cross sectional view of the Patented July 30, 1963 ice 64 dye or paste printing section of the embodiment; wherein FIGS. 2a and 20 show in vertical section opposite ends of the dye or paste printing section and FIG. 2b shows dye or paste printing section in transverse section;

FIG. 3 is a fragmentary front elevational view, partly cutaway, of the terminal portion of the steaming section;

FIG. 4 is a transverse cross sectional view of the steaming section;

FIG. 5 is a diagrammatic transverse cross sectional View of the cylinder of the chrome printing section of the embodiment;

FIG. 6 is a diagrammatic fragmentary cross sectional View of the cylinder shown in FIG. 5 taken longitudinally thereof; and

FIGURE 7 shows a schematic view, partially in crosssection, of the steaming section including a blower.

Referring to the drawings, there (is shown a continuous dyeing apparatus having a dye printing section A, which includes a rotary cylinder 1 adapted to be driven from a suitable power source and covered about the periphery thereof with a rubber layer 2, which in turn is covered on the outside by a network 2a. Arranged around the cylinder circumferentially thereof are tubular printing rollers 3 each formed on the periphery with alternate ridges and recesses axially extending along the length of the roller. The ridges or raised portions 4 of each of the printing rollers 3 each serve as a printing region with passageways 5 formed therein so as to connect the outside with the inside thereof. The printing rollers 3 are each covered about the periphery with a layer of spongy or foraminous resilient rubber 6, which in turn is covered by a network 7. A stationary tubular rod 6 is arranged axially of each printing roller 3 for conducting dye stock and is connected at either end to a stock pumping means not shown. The printing roller 3 is fitted over this tubular rod 8 with a definite clearance 9 kept with respect to the periphery thereof for free rotation of the printing roller 3-. Provided in the wall of the main rod portion are radial stock passageways 10 for communication between the outside and inside of the tubular rod 8. It will be understood that the printing rollers 3 are arranged around the cylinder 1 so that their ridges or printing regions 4 are brought into contact with the periphery of the cylinder so as to be rotated thereby at the same surface speed as the cylinder 1. A cleaning roller 11 is mounted as shown for free vertical sliding movement along guide brackets and normally pressed against each of the printing rollers 3 under the bias of spring means 12.

As shown in FIG. 1, the dyeing apparatus further includes a steaming section B arranged adjacent to the dye printing section A. A steaming section B comprises a number of subsections as shown, each of which includes a double-walled barrel including two concentric cylindrical shells 13 and 14 (FIG. 4) defining therebetween an enclosed annular space as a steamjacket. Two fans 15 are arranged within the inner shell .13 for providing convection currents of hot vapor therein. One of the fans .15 is disposed in the right-hand half of the subsection and over the path of a chain conveyor 18 running through the steam section B. The conveyor will he further described later. The other fan is disposed in the left-hand half of the subsection and under the path of the chain conveyor 18, as will readily be observed from FIGS. 3 and 4. The annular space between the inner and outer shells .1-3 and 14 is fluid-tight and in communication with a conduit I16 through which hot steam is introduced into the space. Numeral 16 designates a steam conduit opening to the interior o f the inner shell 1-3. Such subsections each comprising doublewalled :barrel :13-14 are interconnected to form the steaming section 'B, with a rubber coupling 17 fluid-tightly interconnecting the inner cylindrical shells 13 of each pair of adjacent subsections.

The chain conveyor '18 is provided material being processed for conveying the through the steaming section B and has a conveying run extending substantially axially of the inner shells 113 and a return run extending exteriorly of the double-walled barrels to form a closed conveyor loop. Secured to the inner shell 13 located at either end of the steaming section B is a closure member 19 which is formed with an elongated substantially diametrically extending opening through which the chain conveyor with the textile material thereon may pass freely. In the closure member 19 are defined upper and lower air chambers 20, 20 respectively above and below the path of said conveyor 18. The upper'air chamber 20 is in communication with the delivery side of a blower and the lower air chamber 20' with the suction side thereof. The bottom wall of the upper chamber 29 and the top Wall of the lower chamber 20 are spaced apart to form said elongated opening as a conveyor passage and are formed with aligned ai-r passageways 20a and 20'a, respectively, for forming an air curtain for prevention of any escape of the inner hot vapor through such opening at either end of the steaming section B.

The remaining part C of the "apparatus, forming a chrome printing section, isformed similarly to the dye printing section A described hereinbefore and thus comprises a second rotary cylinder 21 and one or more printing rollers each of the same construction as in .case of the dye printing section A. Only, the cylinder 21 in the section C is provided with a suction means and has the following construction. The rotary cylinder 21 has its peripheral wall perforated (FIGS. and 6) and is fitted over a stationary structure 23 forming a suction passage 22 for relative rotation with respect to the structure 23. It will be understood that the cylinder 21 is adapted to be driven by a suitable power source in the same manner as the cylinder 1 of the dye printing section A. A network 2 is provided to cover the peripheral surface of the perforated cylinder wall. Numeral '25 designates a suction duct communicating with said suction passage 22 by way of the perforated cylinder wall and connected at one end with a source of air suction not shown. Numeral 26 designates a radial air passage disposed within the perforated cylinder 21 and opening at the radially outward end at a point where the material being processed is separated 'from the perforated cylinder 21. At the inner end the air passage '26 is connected to an air conduit 27 leading from a source of air pressure not shown. The suction pass-age 22 disposed within the perforated cylinder 21 has an inlet opening of a circumferential extent corresponding to the angular range including all of the printing rollers. that around the rotary cylinders 1- and 21 may be arranged one or more printing rollers-as desired.

In operation of the illustrated embodiment, material to he dyed such, for example, as a top sliver formed at the precedinggill stage, is first ied' to 'the dye printing section A to pass between the rotary cylinder 1 and the printing rollers 3 to receive different dyepastes of respective colors, which are forced out from the interior of the printing rollers 3 to the surface of the printing regions thereof.

The textile material is then transferred onto the chain conveyor 18 to'zbeconveyed through the successive inner cylindrical shells 113 of the steaming section B for pro moting the'impregnation'of paste dyes into the fibers. The materialthus carried through the steaming section is then transferred to the c ome printing section C to pass between the rotary cylinder 21 and the printing rollers arranged around the latter so that the chrome liquid being forced out 'from the'interior of the respective printing It will be understood if, rollers onto the printing areas thereof is impressed to the surfaces of the material which have previously been imprinted with paste, and at the same time is impregnated into the material by the suction within the rotary cylinder. The sliver after passing through the chrome printing section C then reache the delivery end of the apparatus to be delivered into a suitable case. 7

It will he recognized that the printing mechanism of the dye and chrome printing sections is simplified by an arrangement in which the dye stock is forced out from the interior of the printing rollers to the printing regions thereof for application onto the material being processed. In addition, the provision of a suction means in the rotary cylinder of the chrome printing section C enables effective impregnation of dyeing stock into the fibers.

Onv

the other hand multicolor printing'may be easily effected by arranging a plurality of printing rollers around the rotary cylinder. Thus, it will be appreciated that the dyeing apparatus according to the present invention has increased practical utility as a printing means for l textile fibers.

What'is claimedis:

. 1. A rollerlfor usewith textile printing apparatus comprising a tubular rod having a radial passageway for conducting printing stock from within the rod externally thereof, a printing roller rotatahly fitted over said tuhular rod with an annular clearance provided therebetween, said printing roller including-a plurality of raised printing regions each having passage-ways extending there- 'through to provide communication externally and internally of said printingroller, a layer of foraminous resilient material covering the-outer periphery of said printing roller, and a network covering the outer periphery of said layer of foraminous resilient material.

2. In textile printingapparatus as claimed in claim 1 comprising a rotary cylinder, a plurality of printing rollers including the first said printing roller arranged about said cylinder in resilient engageme'nt peripherally therewith,

and means for forcing the printing stock radially outwardly through said passageways formed in said raised printing regions of each of said printing rollers so as to impregnate with the printing stock corresponding areas of said layer of foraminous resilient material which are in contact with said raised printing regions of the roller whereby textile material is imprinted with said printing stock over an extent corresponding to that of the printing regions while being passedybetween said cylinder and said printing rollers.

3. Apparatus as claimed ing suction means in said tion with said stock forcing means to attainefrective impregnation vof the printing stock into the textile material with the latter between said cylinder and said printing rollers, said suction means establishing suction within the cylinder for exerting a suction force on the textile material and the printing stock thereon asthe textile material passes between the cylinder and the printing rollers.

in claim 2 further compris- References .Cited in the file of this patent UNITED STATES PATENTS 268,556 Simpson Dec. 5, 1882 521,816 Refiitt, June 26, 1894 575,836 Henrici Jan. 26, 1897 1,902,429 Wenzel Mar. 21, 1933 2,080,635 Schramek May 1-8, 1937 2,587,534 Schwartz Feb. 26, 1952 3,011,328 Fleissner Dec. 5, 1961 FOREIGN PATENTS 1,294 Great Britain Apr. 9, 1875 36,247 Netherlands Sept. 16, 1935 563,181 Germany Nov. 3, 1932 rotary cylinder for coopera- 

1. A ROLLER FOR USE WITH TEXTILE PRINTING APPARATUS COMPRISING A TUBULAR ROD HAVING A RADIAL PASSAGEWAY FOR CONDUCTING PRINTING STOCK FROM WITH THE ROD EXTERNALLY THEREOF, A PRINTING ROLLER ROTATABLY FITTED OVER SAID TUBULAR ROD WITH AN ANNULAR CLEARANCE PROVIDED THEREBETWEEN, SAID PRINTING ROLLER INCLUDING A PLURALITY OF RAISED PRINTING REGIONS EACH HAVING PASSAGEWAYS EXTENDING THERETHROUGH TO PROVIDE COMMUNICATION EXTERNALLY AND INTERNALLY OF SAID PRINTING ROLLER, A LAYER OF FORAMINOUS RESILIENT MATERIAL COVERING THE OUTER PERIPHEY OF SAID PRINTING ROLLER, AND A NETWORK COVERING THE OUTER PERIPHERY OF SAID LAYER OF FORAMINOUS RESILIENT MATERIAL. 